Automobile radiator



A. H. LEIPERT.

AUTOMOBILE RADIATOR.

APPLICATION FILED MAYZ? 1920. 1,403,860. Patented Jan. 17, 1922.

3 SHEETSSHEET 1.

,WQTQQ" 'M g w? ATTORNEY A. H. LEIPERT.

AUTOMOBILE RADIATOR. APPLICATION man MAY 21, 1920.

Patented Jan. 17, 1922.

3 SHEETS-SHEET 2.

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4 TTOR/VEY A. H. LEIPERT.

AUTOMOBILE RADIATOR.

APPLICATION man MAY 27. 1920,

Patented Jan. 17, 1922.

3 SHEETS-SHEET 3- ATTORNEYS II HI' E n UNITED STATES PATENT OFFICE.

AUGUST H. LEIPERT, OF NEW YORK, N. Y., ASSIGNOR TO INTERNATIONAL MOTOR COMPANY, OF NEW YORK, N. Y.,

A CORPORATION OF DELAWARE.

AUTOMOBILE RADIATOR.

Specification of Letters Patent.

Patented Jan. 17, 1922.

Application filed May 27, 1920. Serial No. 384,516.

To aZZ whom. it may concern:

Be it known that I, Aneusr H. Lnirnnr, a citizen of the United States, residing in the borough of Queens of the city of New York, in the State of New York, have invented certain new and useful Improvements in Automobile 'Radiators, of which the following is a specification, reference being had to the accompanying drawings, forming a part hereof.

The objections to the use of belt driven fans as mechanical cooling agents for cooling radiators have long been recognized. The wear to which fan belts are subjected causes their disintegration, the power required to drive a fan is very appreciable, introducing an added factor of inefiiciency', and the actual danger resulting from the breaking of a fan belt is not inconsider'able, especially when the fan as in many motor trucks is located near the floor board. Many efforts have been made to provide self-contained fan units as a part of the fly-wheel and other expedients have been used, but such efforts have not been the best solutions since usually they require reconstruction and rearrangement of many of the parts now adopted as standard design.

The present invention has for its object to provide an improved automobile radiator which shall have associated with it a cooling fan of such structure as will permit its ready incorporation in motor trucks of standard desi 'n without the changing of any of the parts or their rearrangement, and will serve as an effective and highly efficient cooling medium. In accordance with the invention the radiator is mounted in rear of the motor and directly in front of the dash and has imperforate front and rear walls which form air channels extending downwardly to a point beneath the floor board. This radiator is mounted in a particular relation to the lly-wheel and to a fan ring carried thereby, the blades of the fan ring being of such peculiar construction and relation and in such disposition to the air channels as to bite the air and create constant circulation across the tubes by a combined centripetal and centrifugal action on the air. This is the essence of the invention. One suitable embodiment thereof is illustrated in the accompanying drawings, in which- Figure 1 is a view in vertical section of an improved radiator showing in. side elevation the improved fan therefor, all of the parts being indicated in their relation to the motor and dash of a truck.

Figure 2 is a view in front elevation of the improved radiator.

Figure 3 is a view in plan thereof;

Figures 4 and 5 are fragmentary detail views on a larger scale showing the fan ring and one of the blades thereon.

As shown in Figure 1 the improved radiator a is mounted in accordance with the practice now prevalent in some types trucks, in rear of the motor 6 and immediately in front of the dash c. The radiator tubes a are exposed at the sides of the radiator for free inflow of air across them for cooling of the circulating water. These tubes are enclosed between an imperforate front wall a and an imperforate rear wall a so that the air is drawn in only from the sides across the tubes and is subject to the greatest suction action by the fan in the confined space. The front wall a extends downwardly and embraces the fly-wheel (Z on the propeller shaft 6 so that the direc tion of flow of the air downwardly is well controlled and the air is confined against general diffusion. On the rear face of the fly-wheel is bolted a fan ring f which may be of light cast metal, such as aluminum and in this ring are provided through slots f of suitable inclination to radial lines, these slots being adapted to receive the heels of fan blades g. Bolts g may be passed through the fan blades and the rings to secure the blades in position. As shown in Figure 4c the blades are of peculiar type having lips g which extend beyond the faceof the ring f and into the air space directly beneath the confining walls c of, so as to bite the-air and cause its circulation in a manner to be described. The blades may have secured to their edges an angle ring It which rests in such intimate proximity to the edge of the walls 0 a as to further confine the air and make it essentially subject to the action of the biting edges 9 of the blades 9.

The angular position of the blades 9 to radial lines of the ring f are such that when the fly-wheel rotates and the biting edges g of the blades revolve around the confined space formed by the casing about the flywheel d, air will be drawn continuously and rapidly a ros he tubes a and downward y towards the axis of rotation of the ring f,

the general eilect appearing to be one of centripetal action. \Vhen the air is thus drawn downwardly and towards the axis of rotation of the ring it is further acted on by the blades 9 and thrown outwardly with what appears to be a centrifugal action. Whatever the theory may be, however, the

result is that a strong steady circulation of air is secured with a minimum consumption of power by the fan action and the water within the radiator tubes is cooled as ell ectively and with much greater efliciency than has been possible with the use of a belt driven fan. The parts as described and related admit of the ready installation of radiators of this type in old truck constructions without necessitating'the change or rear rangement of any of the standardized elements. Further, for new constructions the improved radiator lends itself to comparatively inexpensive and ready assembling and installation and provides for the elimination of the accessory clement necessary where a belt driven tan is employed. All elements of danger are eliminated and the annoyance 01": replacement of parts is removed.

As stated hereinbefore, efforts have been made to solve the cooling aroblem by providing self-contained fan units, but it has been either ineflicient or impracticable in that,

they require reorganization of many of the elements of 'a standardized form of truck. Further it has been found that the peculiar relation of fan blades and tan ring to the confining air channels as illustrated herein, is conducive to the best results.

I claim as my invention:

1. In combination with a radiator having front and rear imperforate walls, a closed channel leading downwardly from the radiator, a fiy-wheel disposed within the channel in substantially the plane of the radiator, a fan ring secured to the face of the fly-wheel, and fan blades mounted on the fan ring and disposed at one side of the plane of the chain nel but having their edges disposed within the channel. r

2. A fan for automobile radiators comprising a ring secured to the fly-wheel of the motor and having inclined slots through its face, fan blades having their bases extending through the slots, and means to secure the blades within the slots, the said 

